Add basic Account Settings page

[dshoreman]

Adds a new page, accessible via 'Account Settings' in the bottom-left menu, with two forms for changing the account password or name and email.

A much needed addition, and saves me having to worry about replacing the default user seeder with something more practical in the installer.

[codecov[bot]]

Codecov Report

Merging #572 (c0d6905) into develop (6b6482a) will increase coverage by 0.00%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             develop     #572   +/-   ##
==========================================
  Coverage      99.69%   99.69%           
- Complexity       449      451    +2     
==========================================
  Files             87       88    +1     
  Lines           1312     1325   +13     
==========================================
+ Hits            1308     1321   +13     
  Misses             4        4           

Impacted Files	Coverage Δ
app/Http/Controllers/User/UpdateAccount.php	100.00% <100.00%> (ø)

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