adding recurring date within the tip table under brave://rewards

[kjozwiak]

Description

We should display the recurring date within the Tip table under brave://rewards. Once a user sets a recurring tip and forgets the date, there's no visible way to check via the current UI.

Steps to Reproduce

1. launch the most recent version of brave (0.55.20 Chromium: 70.0.3538.67 in this case)
2. enable rewards via brave://rewards & accept a grant
3. visit a any website and click on the BAT icon under the URL
4. click on Send tip..
5. select an amount and enable Make this monthly and click on Set monthly Tip
6. visit brave://rewards and you'll see the entry but there's no visible recurring date

Actual result:

Expected result:

We should display the recurring date within the table. Once a user sets a recurring tip and forgets the date, there's no visible way to check via the current UI.

Reproduces how often:

100% reproducible using the above STR.

Brave version (brave://version info)

Brave	0.55.20 Chromium: 70.0.3538.67 (Official Build) (64-bit)
Revision	9ab0cfab84ded083718d3a4ff830726efd38869f-refs/branch-heads/3538@{#1002}
OS	Mac OS X

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds?

Yes, reproducible under both dev and beta as well.

Additional Information

CCing @jenn-rhim

[NejcZdovc]

@kjozwiak recurring date is the same as auto contribute date in table above

[NejcZdovc]

cc @davidtemkin @jenn-rhim

[NejcZdovc]

ping @davidtemkin @mandar-brave should we implement this or close it?

[davidtemkin]

Let's do it. Add a line to the Tips panel, as follows:

"Monthly tips will next be sent" followed by the next contribution date.

The formatting should match the line in the A-C panel ("next contribution date").

NOTE : This line should only appear if the user has established one or more monthly tips. In the event that there are no active monthly tips, the line should not appear.

[LaurenWags]

Verified passed with

Brave	0.60.23 Chromium: 72.0.3626.96 (Official Build) beta(64-bit)
Revision	84098ee7ef8622a9defc2ef043cd8930b617b10e-refs/branch-heads/3626@{#836}
OS	Mac OS X

• Verified test plan from Adds recurring date to donations box brave-core#1412
• Verified if there are no recurring tips, the contribution line is not displayed:
  
  
• Verified when there is at least one recurring tip the contribution line is displayed:
  
• Verified that if only one recurring tip is listed and you remove it, the contribution date line is removed from view
• Verified that once monthly recurring tips contribute, the date in this panel is updated (note, screenshots below are from a different profile than the one used above that's why the 'Total tips this month' value is different):
  
  
• Logged follow up issue for text Contribution date text on Tips panel #3287

Verification passed on

Brave	0.60.25 Chromium: 72.0.3626.96 (Official Build) beta (64-bit)
Revision	84098ee7ef8622a9defc2ef043cd8930b617b10e-refs/branch-heads/3626@{#836}
OS	Windows 10

• Verified test plan from brave/brave-core#1412

Verification passed on

Brave	0.60.26 Chromium: 72.0.3626.96 (Official Build) beta(64-bit)
Revision	84098ee7ef8622a9defc2ef043cd8930b617b10e-refs/branch-heads/3626@{#836}
OS	Linux

• Verified test plan from brave/brave-core#1412